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<title>class Racc::GrammarFileScanner - racc: Ruby Standard Library Documentation</title>


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    <li ><a href="#method-c-new">::new</a>
    <li ><a href="#method-i-atom_symbol">#atom_symbol</a>
    <li ><a href="#method-i-get_quoted_re">#get_quoted_re</a>
    <li ><a href="#method-i-lineno">#lineno</a>
    <li ><a href="#method-i-literal_head-3F">#literal_head?</a>
    <li ><a href="#method-i-next_line">#next_line</a>
    <li ><a href="#method-i-read">#read</a>
    <li ><a href="#method-i-reads">#reads</a>
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    <div id='extraz'><div class='adzbox-index'  >
      
     </div>         
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    <main role="main" aria-labelledby="class-Racc::GrammarFileScanner">
    <h1 id="class-Racc::GrammarFileScanner" class="class">
      class Racc::GrammarFileScanner
    </h1>

    <section class="description">
    
    </section>

      <section id="5Buntitled-5D" class="documentation-section">


      <section class="constants-list">
      <header>
      <h3>Constants</h3>
      </header>
      <dl>
          <dt id="CACHE">CACHE
          <dd>
          <dt id="LEFT_TO_RIGHT">LEFT_TO_RIGHT
          <dd>
          <dt id="ReservedWord">ReservedWord
          <dd>
        </dl>
        </section>

        <section class="attribute-method-details" class="method-section">
        <header>
        <h3>Attributes</h3>
        </header>

          <div id="attribute-i-debug" class="method-detail">
            <div class="method-heading attribute-method-heading">
              <span class="method-name">debug</span><span
                class="attribute-access-type">[RW]</span>
            </div>

            <div class="method-description">
              
              </div>
            </div>
          <div id="attribute-i-epilogue" class="method-detail">
            <div class="method-heading attribute-method-heading">
              <span class="method-name">epilogue</span><span
                class="attribute-access-type">[R]</span>
            </div>

            <div class="method-description">
              
              </div>
            </div>
            </section>


                <section id="public-class-5Buntitled-5D-method-details" class="method-section">
                <header>
                <h3>Public Class Methods</h3>
                </header>

                  <div id="method-c-new" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">new</span><span
                                class="method-args">(str, filename = &#39;-&#39;)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="new-source">
            <pre><span class="ruby-comment"># File racc-1.7.1/lib/racc/grammarfileparser.rb, line 298</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">initialize</span>(<span class="ruby-identifier">str</span>, <span class="ruby-identifier">filename</span> = <span class="ruby-string">&#39;-&#39;</span>)
  <span class="ruby-ivar">@lines</span>  = <span class="ruby-identifier">str</span>.<span class="ruby-identifier">b</span>.<span class="ruby-identifier">split</span>(<span class="ruby-regexp">/\n|\r\n|\r/</span>)
  <span class="ruby-ivar">@filename</span> = <span class="ruby-identifier">filename</span>
  <span class="ruby-ivar">@lineno</span> = <span class="ruby-value">-1</span>
  <span class="ruby-ivar">@line_head</span>   = <span class="ruby-keyword">true</span>
  <span class="ruby-ivar">@in_rule_blk</span> = <span class="ruby-keyword">false</span>
  <span class="ruby-ivar">@in_conv_blk</span> = <span class="ruby-keyword">false</span>
  <span class="ruby-ivar">@in_block</span> = <span class="ruby-keyword">nil</span>
  <span class="ruby-ivar">@epilogue</span> = <span class="ruby-string">&#39;&#39;</span>
  <span class="ruby-ivar">@debug</span> = <span class="ruby-keyword">false</span>
  <span class="ruby-identifier">next_line</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                          </section>

                <section id="public-instance-5Buntitled-5D-method-details" class="method-section">
                <header>
                <h3>Public Instance Methods</h3>
                </header>

                  <div id="method-i-lineno" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">lineno</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="lineno-source">
            <pre><span class="ruby-comment"># File racc-1.7.1/lib/racc/grammarfileparser.rb, line 313</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">lineno</span>
  <span class="ruby-ivar">@lineno</span> <span class="ruby-operator">+</span> <span class="ruby-value">1</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-yylex" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">yylex</span><span
                                class="method-args">() { |sym, tok| ... }</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="yylex-source">
            <pre><span class="ruby-comment"># File racc-1.7.1/lib/racc/grammarfileparser.rb, line 319</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">yylex</span>(<span class="ruby-operator">&amp;</span><span class="ruby-identifier">block</span>)
  <span class="ruby-keyword">unless</span> <span class="ruby-ivar">@debug</span>
    <span class="ruby-identifier">yylex0</span>(<span class="ruby-operator">&amp;</span><span class="ruby-identifier">block</span>)
  <span class="ruby-keyword">else</span>
    <span class="ruby-identifier">yylex0</span> <span class="ruby-keyword">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">sym</span>, <span class="ruby-identifier">tok</span><span class="ruby-operator">|</span>
      <span class="ruby-identifier">$stderr</span>.<span class="ruby-identifier">printf</span> <span class="ruby-string">&quot;%7d %-10s %s\n&quot;</span>, <span class="ruby-identifier">lineno</span>(), <span class="ruby-identifier">sym</span>.<span class="ruby-identifier">inspect</span>, <span class="ruby-identifier">tok</span>.<span class="ruby-identifier">inspect</span>
      <span class="ruby-keyword">yield</span> [<span class="ruby-identifier">sym</span>, <span class="ruby-identifier">tok</span>]
    <span class="ruby-keyword">end</span>
  <span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                          </section>

                <section id="private-instance-5Buntitled-5D-method-details" class="method-section">
                <header>
                <h3>Private Instance Methods</h3>
                </header>

                  <div id="method-i-atom_symbol" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">atom_symbol</span><span
                                class="method-args">(token)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="atom_symbol-source">
            <pre><span class="ruby-comment"># File racc-1.7.1/lib/racc/grammarfileparser.rb, line 399</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">atom_symbol</span>(<span class="ruby-identifier">token</span>)
  <span class="ruby-keyword">if</span> <span class="ruby-identifier">token</span> <span class="ruby-operator">==</span> <span class="ruby-string">&#39;end&#39;</span>
    <span class="ruby-identifier">symbol</span> = <span class="ruby-value">:END</span>
    <span class="ruby-ivar">@in_conv_blk</span> = <span class="ruby-keyword">false</span>
    <span class="ruby-ivar">@in_rule_blk</span> = <span class="ruby-keyword">false</span>
  <span class="ruby-keyword">else</span>
    <span class="ruby-keyword">if</span> <span class="ruby-ivar">@line_head</span> <span class="ruby-keyword">and</span> <span class="ruby-keyword">not</span> <span class="ruby-ivar">@in_conv_blk</span> <span class="ruby-keyword">and</span> <span class="ruby-keyword">not</span> <span class="ruby-ivar">@in_rule_blk</span>
      <span class="ruby-identifier">symbol</span> = <span class="ruby-constant">ReservedWord</span>[<span class="ruby-identifier">token</span>] <span class="ruby-operator">||</span> <span class="ruby-value">:SYMBOL</span>
    <span class="ruby-keyword">else</span>
      <span class="ruby-identifier">symbol</span> = <span class="ruby-value">:SYMBOL</span>
    <span class="ruby-keyword">end</span>
    <span class="ruby-keyword">case</span> <span class="ruby-identifier">symbol</span>
    <span class="ruby-keyword">when</span> <span class="ruby-value">:RULE</span> <span class="ruby-keyword">then</span> <span class="ruby-ivar">@in_rule_blk</span> = <span class="ruby-keyword">true</span>
    <span class="ruby-keyword">when</span> <span class="ruby-value">:CONV</span> <span class="ruby-keyword">then</span> <span class="ruby-ivar">@in_conv_blk</span> = <span class="ruby-keyword">true</span>
    <span class="ruby-keyword">end</span>
  <span class="ruby-keyword">end</span>
  <span class="ruby-ivar">@line_head</span> = <span class="ruby-keyword">false</span>
  <span class="ruby-identifier">symbol</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-get_quoted_re" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">get_quoted_re</span><span
                                class="method-args">(left)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="get_quoted_re-source">
            <pre><span class="ruby-comment"># File racc-1.7.1/lib/racc/grammarfileparser.rb, line 550</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">get_quoted_re</span>(<span class="ruby-identifier">left</span>)
  <span class="ruby-identifier">term</span> = <span class="ruby-constant">Regexp</span>.<span class="ruby-identifier">quote</span>(<span class="ruby-constant">LEFT_TO_RIGHT</span>[<span class="ruby-identifier">left</span>] <span class="ruby-operator">||</span> <span class="ruby-identifier">left</span>)
  <span class="ruby-constant">CACHE</span>[<span class="ruby-identifier">left</span>] <span class="ruby-operator">||=</span> <span class="ruby-regexp">/\A[^#{term}\\]*(?:\\.[^\\#{term}]*)*#{term}/</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-literal_head-3F" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">literal_head?</span><span
                                class="method-args">(pre, post)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="literal_head-3F-source">
            <pre><span class="ruby-comment"># File racc-1.7.1/lib/racc/grammarfileparser.rb, line 506</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">literal_head?</span>(<span class="ruby-identifier">pre</span>, <span class="ruby-identifier">post</span>)
  (<span class="ruby-operator">!</span><span class="ruby-identifier">pre</span> <span class="ruby-operator">||</span> <span class="ruby-regexp">/[a-zA-Z_0-9]/n</span> <span class="ruby-operator">!~</span> <span class="ruby-identifier">pre</span>[<span class="ruby-value">-1</span>,<span class="ruby-value">1</span>]) <span class="ruby-operator">&amp;&amp;</span>
      <span class="ruby-operator">!</span><span class="ruby-identifier">post</span>.<span class="ruby-identifier">empty?</span> <span class="ruby-operator">&amp;&amp;</span> <span class="ruby-regexp">/\A[\s\=]/n</span> <span class="ruby-operator">!~</span> <span class="ruby-identifier">post</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-next_line" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">next_line</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="next_line-source">
            <pre><span class="ruby-comment"># File racc-1.7.1/lib/racc/grammarfileparser.rb, line 364</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">next_line</span>
  <span class="ruby-ivar">@lineno</span> <span class="ruby-operator">+=</span> <span class="ruby-value">1</span>
  <span class="ruby-ivar">@line</span> = <span class="ruby-ivar">@lines</span>[<span class="ruby-ivar">@lineno</span>]
  <span class="ruby-keyword">if</span> <span class="ruby-keyword">not</span> <span class="ruby-ivar">@line</span> <span class="ruby-keyword">or</span> <span class="ruby-regexp">/\A----/</span> <span class="ruby-operator">=~</span> <span class="ruby-ivar">@line</span>
    <span class="ruby-ivar">@epilogue</span> = <span class="ruby-ivar">@lines</span>.<span class="ruby-identifier">join</span>(<span class="ruby-string">&quot;\n&quot;</span>)
    <span class="ruby-ivar">@lines</span>.<span class="ruby-identifier">clear</span>
    <span class="ruby-ivar">@line</span> = <span class="ruby-keyword">nil</span>
    <span class="ruby-keyword">if</span> <span class="ruby-ivar">@in_block</span>
      <span class="ruby-ivar">@lineno</span> <span class="ruby-operator">-=</span> <span class="ruby-value">1</span>
      <span class="ruby-identifier">scan_error!</span> <span class="ruby-identifier">sprintf</span>(<span class="ruby-string">&#39;unterminated %s&#39;</span>, <span class="ruby-ivar">@in_block</span>)
    <span class="ruby-keyword">end</span>
    <span class="ruby-keyword">false</span>
  <span class="ruby-keyword">else</span>
    <span class="ruby-ivar">@line</span>.<span class="ruby-identifier">sub!</span>(<span class="ruby-regexp">/(?:\n|\r\n|\r)\z/</span>, <span class="ruby-string">&#39;&#39;</span>)
    <span class="ruby-ivar">@line_head</span> = <span class="ruby-keyword">true</span>
    <span class="ruby-keyword">true</span>
  <span class="ruby-keyword">end</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-read" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">read</span><span
                                class="method-args">(len)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="read-source">
            <pre><span class="ruby-comment"># File racc-1.7.1/lib/racc/grammarfileparser.rb, line 511</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">read</span>(<span class="ruby-identifier">len</span>)
  <span class="ruby-identifier">s</span> = <span class="ruby-ivar">@line</span>[<span class="ruby-value">0</span>, <span class="ruby-identifier">len</span>]
  <span class="ruby-ivar">@line</span> = <span class="ruby-ivar">@line</span>[<span class="ruby-identifier">len</span> <span class="ruby-operator">..</span> <span class="ruby-value">-1</span>]
  <span class="ruby-identifier">s</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-reads" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">reads</span><span
                                class="method-args">(re)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="reads-source">
            <pre><span class="ruby-comment"># File racc-1.7.1/lib/racc/grammarfileparser.rb, line 517</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">reads</span>(<span class="ruby-identifier">re</span>)
  <span class="ruby-identifier">m</span> = <span class="ruby-identifier">re</span>.<span class="ruby-identifier">match</span>(<span class="ruby-ivar">@line</span>) <span class="ruby-keyword">or</span> <span class="ruby-keyword">return</span> <span class="ruby-keyword">nil</span>
  <span class="ruby-ivar">@line</span> = <span class="ruby-identifier">m</span>.<span class="ruby-identifier">post_match</span>
  <span class="ruby-identifier">m</span>[<span class="ruby-value">0</span>]
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-scan_action" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">scan_action</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="scan_action-source">
            <pre><span class="ruby-comment"># File racc-1.7.1/lib/racc/grammarfileparser.rb, line 430</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">scan_action</span>
  <span class="ruby-identifier">buf</span> = <span class="ruby-constant">String</span>.<span class="ruby-identifier">new</span>
  <span class="ruby-identifier">nest</span> = <span class="ruby-value">1</span>
  <span class="ruby-identifier">pre</span> = <span class="ruby-keyword">nil</span>
  <span class="ruby-ivar">@in_block</span> = <span class="ruby-string">&#39;action&#39;</span>
  <span class="ruby-keyword">begin</span>
    <span class="ruby-identifier">pre</span> = <span class="ruby-keyword">nil</span>
    <span class="ruby-keyword">if</span> <span class="ruby-identifier">s</span> = <span class="ruby-identifier">reads</span>(<span class="ruby-regexp">/\A\s+/</span>)
      <span class="ruby-comment"># does not set &#39;pre&#39;</span>
      <span class="ruby-identifier">buf</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-identifier">s</span>
    <span class="ruby-keyword">end</span>
    <span class="ruby-keyword">until</span> <span class="ruby-ivar">@line</span>.<span class="ruby-identifier">empty?</span>
      <span class="ruby-keyword">if</span> <span class="ruby-identifier">s</span> = <span class="ruby-identifier">reads</span>(<span class="ruby-regexp">/\A[^&#39;&quot;`{}%#\/\$]+/</span>)
        <span class="ruby-identifier">buf</span> <span class="ruby-operator">&lt;&lt;</span> (<span class="ruby-identifier">pre</span> = <span class="ruby-identifier">s</span>)
        <span class="ruby-keyword">next</span>
      <span class="ruby-keyword">end</span>
      <span class="ruby-keyword">case</span> <span class="ruby-identifier">ch</span> = <span class="ruby-identifier">read</span>(<span class="ruby-value">1</span>)
      <span class="ruby-keyword">when</span> <span class="ruby-string">&#39;{&#39;</span>
        <span class="ruby-identifier">nest</span> <span class="ruby-operator">+=</span> <span class="ruby-value">1</span>
        <span class="ruby-identifier">buf</span> <span class="ruby-operator">&lt;&lt;</span> (<span class="ruby-identifier">pre</span> = <span class="ruby-identifier">ch</span>)
      <span class="ruby-keyword">when</span> <span class="ruby-string">&#39;}&#39;</span>
        <span class="ruby-identifier">nest</span> <span class="ruby-operator">-=</span> <span class="ruby-value">1</span>
        <span class="ruby-keyword">if</span> <span class="ruby-identifier">nest</span> <span class="ruby-operator">==</span> <span class="ruby-value">0</span>
          <span class="ruby-ivar">@in_block</span> = <span class="ruby-keyword">nil</span>
          <span class="ruby-identifier">buf</span>.<span class="ruby-identifier">sub!</span>(<span class="ruby-regexp">/[ \t\f]+\z/</span>, <span class="ruby-string">&#39;&#39;</span>)
          <span class="ruby-keyword">return</span> <span class="ruby-identifier">buf</span>
        <span class="ruby-keyword">end</span>
        <span class="ruby-identifier">buf</span> <span class="ruby-operator">&lt;&lt;</span> (<span class="ruby-identifier">pre</span> = <span class="ruby-identifier">ch</span>)
      <span class="ruby-keyword">when</span> <span class="ruby-string">&#39;#&#39;</span>   <span class="ruby-comment"># comment</span>
        <span class="ruby-identifier">buf</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-identifier">ch</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-ivar">@line</span>
        <span class="ruby-keyword">break</span>
      <span class="ruby-keyword">when</span> <span class="ruby-string">&quot;&#39;&quot;</span>, <span class="ruby-string">&#39;&quot;&#39;</span>, <span class="ruby-string">&#39;`&#39;</span>
        <span class="ruby-identifier">buf</span> <span class="ruby-operator">&lt;&lt;</span> (<span class="ruby-identifier">pre</span> = <span class="ruby-identifier">scan_quoted</span>(<span class="ruby-identifier">ch</span>))
      <span class="ruby-keyword">when</span> <span class="ruby-string">&#39;%&#39;</span>
        <span class="ruby-keyword">if</span> <span class="ruby-identifier">literal_head?</span> <span class="ruby-identifier">pre</span>, <span class="ruby-ivar">@line</span>
          <span class="ruby-comment"># % string, regexp, array</span>
          <span class="ruby-identifier">buf</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-identifier">ch</span>
          <span class="ruby-keyword">case</span> <span class="ruby-identifier">ch</span> = <span class="ruby-identifier">read</span>(<span class="ruby-value">1</span>)
          <span class="ruby-keyword">when</span> <span class="ruby-regexp">/[qQx]/n</span>
            <span class="ruby-identifier">buf</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-identifier">ch</span> <span class="ruby-operator">&lt;&lt;</span> (<span class="ruby-identifier">pre</span> = <span class="ruby-identifier">scan_quoted</span>(<span class="ruby-identifier">read</span>(<span class="ruby-value">1</span>), <span class="ruby-string">&#39;%string&#39;</span>))
          <span class="ruby-keyword">when</span> <span class="ruby-regexp">/wW/n</span>
            <span class="ruby-identifier">buf</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-identifier">ch</span> <span class="ruby-operator">&lt;&lt;</span> (<span class="ruby-identifier">pre</span> = <span class="ruby-identifier">scan_quoted</span>(<span class="ruby-identifier">read</span>(<span class="ruby-value">1</span>), <span class="ruby-string">&#39;%array&#39;</span>))
          <span class="ruby-keyword">when</span> <span class="ruby-regexp">/s/n</span>
            <span class="ruby-identifier">buf</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-identifier">ch</span> <span class="ruby-operator">&lt;&lt;</span> (<span class="ruby-identifier">pre</span> = <span class="ruby-identifier">scan_quoted</span>(<span class="ruby-identifier">read</span>(<span class="ruby-value">1</span>), <span class="ruby-string">&#39;%symbol&#39;</span>))
          <span class="ruby-keyword">when</span> <span class="ruby-regexp">/r/n</span>
            <span class="ruby-identifier">buf</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-identifier">ch</span> <span class="ruby-operator">&lt;&lt;</span> (<span class="ruby-identifier">pre</span> = <span class="ruby-identifier">scan_quoted</span>(<span class="ruby-identifier">read</span>(<span class="ruby-value">1</span>), <span class="ruby-string">&#39;%regexp&#39;</span>))
          <span class="ruby-keyword">when</span> <span class="ruby-regexp">/[a-zA-Z0-9= ]/n</span>   <span class="ruby-comment"># does not include &quot;_&quot;</span>
            <span class="ruby-identifier">scan_error!</span> <span class="ruby-node">&quot;unknown type of % literal &#39;%#{ch}&#39;&quot;</span>
          <span class="ruby-keyword">else</span>
            <span class="ruby-identifier">buf</span> <span class="ruby-operator">&lt;&lt;</span> (<span class="ruby-identifier">pre</span> = <span class="ruby-identifier">scan_quoted</span>(<span class="ruby-identifier">ch</span>, <span class="ruby-string">&#39;%string&#39;</span>))
          <span class="ruby-keyword">end</span>
        <span class="ruby-keyword">else</span>
          <span class="ruby-comment"># operator</span>
          <span class="ruby-identifier">buf</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-string">&#39;||op-&gt;&#39;</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">$raccs_print_type</span>
          <span class="ruby-identifier">buf</span> <span class="ruby-operator">&lt;&lt;</span> (<span class="ruby-identifier">pre</span> = <span class="ruby-identifier">ch</span>)
        <span class="ruby-keyword">end</span>
      <span class="ruby-keyword">when</span> <span class="ruby-string">&#39;/&#39;</span>
        <span class="ruby-keyword">if</span> <span class="ruby-identifier">literal_head?</span> <span class="ruby-identifier">pre</span>, <span class="ruby-ivar">@line</span>
          <span class="ruby-comment"># regexp</span>
          <span class="ruby-identifier">buf</span> <span class="ruby-operator">&lt;&lt;</span> (<span class="ruby-identifier">pre</span> = <span class="ruby-identifier">scan_quoted</span>(<span class="ruby-identifier">ch</span>, <span class="ruby-string">&#39;regexp&#39;</span>))
        <span class="ruby-keyword">else</span>
          <span class="ruby-comment"># operator</span>
          <span class="ruby-identifier">buf</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-string">&#39;||op-&gt;&#39;</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">$raccs_print_type</span>
          <span class="ruby-identifier">buf</span> <span class="ruby-operator">&lt;&lt;</span> (<span class="ruby-identifier">pre</span> = <span class="ruby-identifier">ch</span>)
        <span class="ruby-keyword">end</span>
      <span class="ruby-keyword">when</span> <span class="ruby-string">&#39;$&#39;</span>   <span class="ruby-comment"># gvar</span>
        <span class="ruby-identifier">buf</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-identifier">ch</span> <span class="ruby-operator">&lt;&lt;</span> (<span class="ruby-identifier">pre</span> = <span class="ruby-identifier">read</span>(<span class="ruby-value">1</span>))
      <span class="ruby-keyword">else</span>
        <span class="ruby-identifier">raise</span> <span class="ruby-string">&#39;racc: fatal: must not happen&#39;</span>
      <span class="ruby-keyword">end</span>
    <span class="ruby-keyword">end</span>
    <span class="ruby-identifier">buf</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-string">&quot;\n&quot;</span>
  <span class="ruby-keyword">end</span> <span class="ruby-keyword">while</span> <span class="ruby-identifier">next_line</span>()
  <span class="ruby-identifier">raise</span> <span class="ruby-string">&#39;racc: fatal: scan finished before parser finished&#39;</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-scan_error-21" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">scan_error!</span><span
                                class="method-args">(msg)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="scan_error-21-source">
            <pre><span class="ruby-comment"># File racc-1.7.1/lib/racc/grammarfileparser.rb, line 555</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">scan_error!</span>(<span class="ruby-identifier">msg</span>)
  <span class="ruby-identifier">raise</span> <span class="ruby-constant">CompileError</span>, <span class="ruby-node">&quot;#{lineno()}: #{msg}&quot;</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-scan_quoted" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">scan_quoted</span><span
                                class="method-args">(left, tag = &#39;string&#39;)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="scan_quoted-source">
            <pre><span class="ruby-comment"># File racc-1.7.1/lib/racc/grammarfileparser.rb, line 523</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">scan_quoted</span>(<span class="ruby-identifier">left</span>, <span class="ruby-identifier">tag</span> = <span class="ruby-string">&#39;string&#39;</span>)
  <span class="ruby-identifier">buf</span> = <span class="ruby-identifier">left</span>.<span class="ruby-identifier">dup</span>
  <span class="ruby-identifier">buf</span> = <span class="ruby-node">&quot;||#{tag}-&gt;&quot;</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">buf</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">$raccs_print_type</span>
  <span class="ruby-identifier">re</span> = <span class="ruby-identifier">get_quoted_re</span>(<span class="ruby-identifier">left</span>)
  <span class="ruby-identifier">sv</span>, <span class="ruby-ivar">@in_block</span> = <span class="ruby-ivar">@in_block</span>, <span class="ruby-identifier">tag</span>
  <span class="ruby-keyword">begin</span>
    <span class="ruby-keyword">if</span> <span class="ruby-identifier">s</span> = <span class="ruby-identifier">reads</span>(<span class="ruby-identifier">re</span>)
      <span class="ruby-identifier">buf</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-identifier">s</span>
      <span class="ruby-keyword">break</span>
    <span class="ruby-keyword">else</span>
      <span class="ruby-identifier">buf</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-ivar">@line</span>
    <span class="ruby-keyword">end</span>
  <span class="ruby-keyword">end</span> <span class="ruby-keyword">while</span> <span class="ruby-identifier">next_line</span>()
  <span class="ruby-ivar">@in_block</span> = <span class="ruby-identifier">sv</span>
  <span class="ruby-identifier">buf</span> <span class="ruby-operator">&lt;&lt;</span> <span class="ruby-node">&quot;&lt;-#{tag}||&quot;</span> <span class="ruby-keyword">if</span> <span class="ruby-identifier">$raccs_print_type</span>
  <span class="ruby-identifier">buf</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-skip_comment" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">skip_comment</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="skip_comment-source">
            <pre><span class="ruby-comment"># File racc-1.7.1/lib/racc/grammarfileparser.rb, line 419</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">skip_comment</span>
  <span class="ruby-ivar">@in_block</span> = <span class="ruby-string">&#39;comment&#39;</span>
  <span class="ruby-keyword">until</span> <span class="ruby-identifier">m</span> = <span class="ruby-regexp">/\*\//</span>.<span class="ruby-identifier">match</span>(<span class="ruby-ivar">@line</span>)
    <span class="ruby-identifier">next_line</span>
  <span class="ruby-keyword">end</span>
  <span class="ruby-ivar">@line</span> = <span class="ruby-identifier">m</span>.<span class="ruby-identifier">post_match</span>
  <span class="ruby-ivar">@in_block</span> = <span class="ruby-keyword">nil</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-yylex0" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">yylex0</span><span
                                class="method-args">() { |atom_symbol(s), intern| ... }</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="yylex0-source">
            <pre><span class="ruby-comment"># File racc-1.7.1/lib/racc/grammarfileparser.rb, line 332</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">yylex0</span>
  <span class="ruby-keyword">begin</span>
    <span class="ruby-keyword">until</span> <span class="ruby-ivar">@line</span>.<span class="ruby-identifier">empty?</span>
      <span class="ruby-ivar">@line</span>.<span class="ruby-identifier">sub!</span>(<span class="ruby-regexp">/\A\s+/</span>, <span class="ruby-string">&#39;&#39;</span>)
      <span class="ruby-keyword">if</span> <span class="ruby-regexp">/\A\#/</span> <span class="ruby-operator">=~</span> <span class="ruby-ivar">@line</span>
        <span class="ruby-keyword">break</span>
      <span class="ruby-keyword">elsif</span> <span class="ruby-regexp">/\A\/\*/</span> <span class="ruby-operator">=~</span> <span class="ruby-ivar">@line</span>
        <span class="ruby-identifier">skip_comment</span>
      <span class="ruby-keyword">elsif</span> <span class="ruby-identifier">s</span> = <span class="ruby-identifier">reads</span>(<span class="ruby-regexp">/\A[a-zA-Z_]\w*/</span>)
        <span class="ruby-keyword">yield</span> [<span class="ruby-identifier">atom_symbol</span>(<span class="ruby-identifier">s</span>), <span class="ruby-identifier">s</span>.<span class="ruby-identifier">intern</span>]
      <span class="ruby-keyword">elsif</span> <span class="ruby-identifier">s</span> = <span class="ruby-identifier">reads</span>(<span class="ruby-regexp">/\A\d+/</span>)
        <span class="ruby-keyword">yield</span> [<span class="ruby-value">:DIGIT</span>, <span class="ruby-identifier">s</span>.<span class="ruby-identifier">to_i</span>]
      <span class="ruby-keyword">elsif</span> <span class="ruby-identifier">ch</span> = <span class="ruby-identifier">reads</span>(<span class="ruby-regexp">/\A./</span>)
        <span class="ruby-keyword">case</span> <span class="ruby-identifier">ch</span>
        <span class="ruby-keyword">when</span> <span class="ruby-string">&#39;&quot;&#39;</span>, <span class="ruby-string">&quot;&#39;&quot;</span>
          <span class="ruby-keyword">yield</span> [<span class="ruby-value">:STRING</span>, <span class="ruby-identifier">eval</span>(<span class="ruby-identifier">scan_quoted</span>(<span class="ruby-identifier">ch</span>))]
        <span class="ruby-keyword">when</span> <span class="ruby-string">&#39;{&#39;</span>
          <span class="ruby-identifier">lineno</span> = <span class="ruby-identifier">lineno</span>()
          <span class="ruby-keyword">yield</span> [<span class="ruby-value">:ACTION</span>, <span class="ruby-constant">SourceText</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">scan_action</span>(), <span class="ruby-ivar">@filename</span>, <span class="ruby-identifier">lineno</span>)]
        <span class="ruby-keyword">else</span>
          <span class="ruby-keyword">if</span> <span class="ruby-identifier">ch</span> <span class="ruby-operator">==</span> <span class="ruby-string">&#39;|&#39;</span>
            <span class="ruby-ivar">@line_head</span> = <span class="ruby-keyword">false</span>
          <span class="ruby-keyword">end</span>
          <span class="ruby-keyword">yield</span> [<span class="ruby-identifier">ch</span>, <span class="ruby-identifier">ch</span>]
        <span class="ruby-keyword">end</span>
      <span class="ruby-keyword">else</span>
      <span class="ruby-keyword">end</span>
    <span class="ruby-keyword">end</span>
  <span class="ruby-keyword">end</span> <span class="ruby-keyword">while</span> <span class="ruby-identifier">next_line</span>()
  <span class="ruby-keyword">yield</span> <span class="ruby-keyword">nil</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
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